Self-Propelled TBM Shielded Cutter from Canada
A self-propelled tunnel boring machine segment with shielded disc cutters for mixed ground mineral tunneling. Falls under HTS 8430.31.0080 as other self-propelled tunneling machinery. Designed for ore body access tunnels.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Segment shipments by tunnel diameter specs for accurate duty calculation
• Pre-qualify thrust bearing imports under separate machinery headings if applicable
• Avoid reclassification by including ground pressure test data proving tunneling design